Michael137 added inline comments.
================
Comment at: lldb/source/Target/Target.cpp:208
+ // of the debugee.
+ m_scratch_type_system_map.Clear();
m_process_sp.reset();
----------------
Michael137 wrote:
> kastiglione wrote:
> > Do we have some place in the life-cycle where we can perform this only if
> > the target has changed? Ideally this would happen when the binary has a
> > different timestamp, or for mach-o a different UUID.
> There is `DidUnloadModules` which gets notified when an lldb_private::Module
> gets unloaded (e.g., on rebuilt). But this includes JITted modules (e.g.,
> when running AppleObjectiveCRuntimeV2 utility functions) in which case we
> wouldn’t want to flush the type systems. Also the Clang REPL (and I assume
> the Swift REPL) rely on the type system being still present after we unloaded
> the module associated with the evaluated expression. All this is to say, I
> found it to be quite fiddly to determine when to flush the persistent
> variables from within that notification. Really we would like a notification
> to the Target which says “we restarted the debugee AND some module got
> rebuilt”. In that case it’s not safe to keep the persistent variables around.
> I’ll double check if there isn’t something like that around.
I suppose we could do something like:
```
void Target::ModulesDidUnload(ModuleList &module_list, bool delete_locations) {
...
if each module in module_list is Type::eTypeExecutable or
Type::eTypeObjectFile {
m_scratch_type_system_map.Clear();
}
```
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D138724/new/
https://reviews.llvm.org/D138724
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